Ricoh M018 Service Manual page 184

Service Call Conditions
High Temperature Detection Error
This SC is issued if one of following conditions occurs:
The thermistor (center) detects 255°C or thermistor (end) detects 245°C.
The thermistor (center) detects a 3°C increment or more for five seconds at
220°C or more or the thermistor (end) detects a 4°C increment or more for
five seconds at 210°C or more.
543
Defective I/O control (EGB)
Defective EGB
1. Replace the EGB
Execute "Engine Maintenance Menu" to recover the machine after
completing the recovery procedure. Otherwise, the machine continues to
issue this SC code and cannot be operated.
Heating Lamp Full-Power Error
The fusing lamp is fully-powered for a certain time while the fusing unit stays in the
stand-by mode and is not rotating.
Deformed thermistor
Thermistor not in the correct position
545
Defective fusing lamp
1. Replace the fusing unit.
2. Replace the fusing lamp.
Execute "Engine Maintenance Menu" to recover the machine after
completing the recovery procedure. Otherwise, the machine continues to
issue this SC code and cannot be operated.
M018/M019 3-14 SM Appendix